Title :
Effect of compressive stress on a composite resonator based on PVF 2
Author :
Bah, S. ; Quezel, G. ; Benech, Ph. ; Ngalamou, L. ; Legrand, J.F.
Author_Institution :
L.I.M.E., Univ. Joseph Fourier, Grenoble, France
Abstract :
Experimentally, composite resonators made of a thick piezo-film surrounded by two thin brass electrodes and by two rubber foils are investigated. The piezoelectric films are polyvinylidene fluoride (PVF 2). Using PFV2 in a transducer, a compressive stress of typically 0.6 MPa induces an upward shift of the resonance frequency by 10% and a decrease of the quality factor by 50%
Keywords :
acoustic impedance; acoustic resonators; laminates; piezoelectric materials; polymer films; stress effects; composite resonator; compressive stress; multilayer structure; piezoelectric films; polyvinylidene fluoride; quality factor; resonance frequency; rubber foils; thick piezo-film; thin brass electrodes; transducer; Acoustic measurements; Compressive stress; Force measurement; Impedance; Polymers; Q factor; Resonance; Resonant frequency; Rubber; Voltage;
Conference_Titel :
Ultrasonics Symposium, 1992. Proceedings., IEEE 1992
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-0562-0
DOI :
10.1109/ULTSYM.1992.275834
